/*
 * Copyright (C) 2010-2018 Gordon Fraser, Andrea Arcuri and EvoSuite
 * contributors
 *
 * This file is part of EvoSuite.
 *
 * EvoSuite is free software: you can redistribute it and/or modify it
 * under the terms of the GNU Lesser General Public License as published
 * by the Free Software Foundation, either version 3.0 of the License, or
 * (at your option) any later version.
 *
 * EvoSuite is distributed in the hope that it will be useful, but
 * WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
 * Lesser Public License for more details.
 *
 * You should have received a copy of the GNU Lesser General Public
 * License along with EvoSuite. If not, see <http://www.gnu.org/licenses/>.
 */
package com.examples.with.different.packagename.concolic;

public class MyLinkedList {

	private static class Node {
		Node next;
		Node previous;
		Object value;
	}

	private Node header = null;

	private int size;

	public MyLinkedList() {
		Node new_header = new Node();
		new_header.previous = new_header;
		new_header.next = new_header;
		header = new_header;
		size = 0;
	}

	public void add(Object value) {
		Node new_node = new Node();
		new_node.value = value;
		new_node.previous = header;
		new_node.next = header.next;

		header.next.previous = new_node;
		header.next = new_node;

		size++;

	}

	public Object get(int index) {
		if (index >= size)
			throw new IllegalArgumentException();

		Node iterator = header.next;
		for (int i = 0; i < index; i++) {
			iterator = iterator.next;
		}

		return iterator.value;

	}

	public int size() {
		return size;
	}

	public void unreacheable() {
		if (this.header == null) {
			// unreachable branch
			size = -1;
		}
	}

}
